For centuries, women were largely excluded from the field of mathematics. Only men were considered intelligent enough to be mathematicians. However, in ancient Greece, there was a secret society led by Pythagoras that considered both men and women equal. One of its members, Theano, made early discoveries in mathematics but was unable to publicly take credit for her work. Throughout history, other notable women mathematicians like Hypatia of Alexandria and Emmy Noether faced discrimination and obstacles but still made important contributions. Today, standardized test scores show no gender differences in math abilities among students. While some biases may still exist, gender equality in mathematics education is growing.